Product Description
The Lenze EVF9331-EVV004 is a durable, 55kW vector frequency inverter for diverse industrial uses, accepting 400-480VAC three-phase input and outputting 110A at 0-600Hz. It features an LED display, IP54-rated dust and water resistance, -10 to 60C operating temperature, safe standstill function, and is designed for easy panel mounting, weighing 14.52kg.
Is Your Device Showing These Signs?
The Lenze EVF9331-EVV004 servo drive commonly experiences issues stemming from DC bus overvoltage faults, often due to regenerative energy during rapid deceleration; resolve this by implementing braking resistors or adjusting deceleration ramps. Communication errors on the EtherCAT bus, traced to cabling problems or incorrect network configuration, require thorough inspection and parameter verification. Overcurrent faults, potentially indicating motor winding shorts or excessive load, necessitate motor testing and load analysis. Firmware corruption can occur, mandating a firmware update or re-flash using the Lenze EASY Starter software. Finally, I/O module failures, impacting sensor feedback and control signals, demand module replacement or signal pathway diagnostics.
Technical specifications
Lenze EVF9331-EVV004: 55kW vector inverter, 400-480VAC input, 110A/0-600Hz output, LED display, IP54, -10-60C, safe standstill, panel mountable, 14.52kg.
Our Repair Process for the
EVF9331-EVV004
Our repair process for the Lenze EVF9331-EVV004 servo drive begins with addressing DC bus overvoltage faults by installing braking resistors or modifying deceleration ramps. Communication errors on the EtherCAT bus are resolved through comprehensive cabling inspection and network parameter verification. Overcurrent faults require immediate motor testing and load analysis to identify winding shorts or excessive load. Firmware corruption is rectified via a mandatory firmware update or re-flash utilizing the Lenze EASY Starter software. I/O module failures necessitate module replacement or thorough signal pathway diagnostics to restore sensor feedback and control signals.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.

Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.

















